baber/WOPTO huggingface dataset:
Patent GB-2024236-A (GB)
Title: Reactive dyes, their preparation and use
IPC: C09B62/095
Filed: 1979-06-15
Abstract: The present invention relates to reactive dyes of the formula   <IMAGE> in which R4 is C1-4-alkyl, C1-4-alkoxy, C1-4-alkoxyalkoxy, acetylamino, ureido, carboxyl, halogen, sulfo, sulfomethyl, trifluoromethyl, sulfamoyl, carbamoyl, nitro or hydroxyl and R5 is a hydrogen atom or one of the substituents named under R4, and if several substituents R4 are present these can be identical or different, or in which R2 and R3 together with the N atom form a six-membered heterocyclic radical, and the radical or radicals of the formula   <IMAGE> in which A is a benzene or naphthalene radical which can contain further substituents, the benzene radical B can contain further substituents, R1 and R2 independently of one another are each a hydrogen atom or a substituted or unsubstituted alkyl radical having 1 to 4 carbon atoms and R3 is a hydrogen atom, a substituted or unsubstituted alkyl radical having 1 to 4 carbon atoms, a substituted or unsubstituted benzyl, cyclohexyl or naphthyl radical, an unsubstituted phenyl radical or a substituted phenyl radical of the formula   <IMAGE> is or are bonded to A and/or to the naphthalene nucleus, which carries one of the two complex-forming oxygen atoms.
Patent GB-2025074-A (GB)
Title: Impedance Measuring Bridges
IPC: G01R17/10
Filed: 1979-07-10
Abstract: In the a.c. bridge 12,20, 14,24, means is provided for adjusting the magnitude of a first said resistive element 26 until the phase difference between the unbalance signal at the input of a first phase sensitive rectifier 38 and a first a.c. reference signal in quadrature with the voltage across the unknown impedance 20 is at a predetermined value and means is provided for subsequently adjusting the tap on the a second resistive element 28 until the phase difference between the signal at the input of a second phase sensitive rectifier 40 and a second a.c. reference signal in phase with the voltage across the unknown is at a predetermined value while maintaining the phase relation between the signals at the inputs of the first phase sensitive rectifier substantially constant to balance the bridge. A digital voltmeter may be provided for determining the reactance and the resistive component of said unknown impedance, by measuring the values of the resistive elements using direct current injected into the fourth arm. <IMAGE>
Patent GB-2027815-A (GB)
Title: Wave energy conversion apparatus
IPC: F03B13/18
Filed: 1979-07-31
Abstract: A buoyant structure 11, in use, is moored in the sea and defines a liquid collection chamber 16. Connected to the collection chamber 16 is a pumping arrangement 21 to 26 which is operable, in response to the action of waves on a flotation member 19 to pump water into the collection chamber. A water driven turbine 35 coupled to an electrical generator 36 is mounted within the buoyant structure 11 so that, in use, when the structure 11 is moored at sea the turbine 35 and generator 36 are located below the collection chamber 16. The turbine 35 is connected by way of a valve 34 to the collection chamber 16 so that, in use, liquid stored in the collection chamber 16 can flow under gravity to the turbine 35 to drive the turbine 35 and the generator 36. <IMAGE>
Patent GB-2062413-A (GB)
Title: Improvements in or relating to communication systems
IPC: H04L1/02
Filed: 1979-08-04
Abstract: A communication system utilises a diversity combiner, suitable for use with tropospheric scatter propagation, in which signals received via different modes of propagation are combined in proportions related to a digital error rate. A digital bit stream is extracted from each received signal and the number of errors present counted in a given interval of time. The error counts are then used to control the gain of amplifiers 15, 16, which amplify the received analogue signals, after which the amplified signals are linearly combined, at 17. <IMAGE>
Patent GB-2038648-A (GB)
Title: Purifying waste water
IPC: F23G7/06
Filed: 1979-09-26
Abstract: A process for purifying contaminated water comprises contacting the contaminated water with air such that the contaminants are stripped into the air. The air may then be utilized as air of combustion in an incinerator where the contaminants are rendered harmless.
Patent GB-2037001-A (GB)
Title: Shoulder support for camera
IPC: F16M13/04
Filed: 1979-11-16
Abstract: A shoulder support structure for a cine or other camera comprises two rigid members 1 and 2 pivotally connected at 3 by their one ends (via a third rigid member (8), in Fig. 4, not shown) and having their other ends Joined by a flexible strap 4. The pivot connection 3 may comprise a bolt with a wing nut and a bracket 5 is included on the bolt for attachment to a camera by conventional threaded bolt to camera bush connection. Each member 1 and 2 is of similar form with an intermediate twist provided along its length distorting the plane of the strip through a right angle. The alternative embodiment of Fig. 4 is constructed of three rigid members and is intended for cameras having a connection point underneath the hand grip. <IMAGE>
Patent GB-2038376-A (GB)
Title: Sinker for Forming Knitted Terry Fabric on Single Cylinder Circular Knitting Machines
IPC: D04B9/12
Filed: 1979-11-19
Abstract: Sinkers (2) for use in forming terry fabric are each mounted associated with a depressing sinker (1) in a single cylinder circular knitting machine e.g. a cylinder and dial machine. In order to make the formation of the terry fabric more reliable, regular and uniform the sinker (2) is provided, at the rear of its hook (6), with a support indentation (7) for the yarn which is to form the elongated loop of the terry fabric and below the hook (6) there is provided a substantially vertical surface (8) for separating the yarn which forms normal loops from the yarn which forms elongated loops. The said vertical surface (8) is followed by a surface (9) which is at a lower level then the depressing surface (13) of the depressing sinker (1). <IMAGE>
Patent GB-2065773-A (GB)
Title: Rotary Pumps
IPC: F04D11/00
Filed: 1979-12-21
Abstract: A rotary pump capable of operation at speeds in excess of 5,000 rpm without cavitation comprises a stationary body 14 defining a compartment 64 in which a quantity of a rigid porous material is mounted for rotation on a shaft 16. Liquid such as oil is fed via an inlet 42 into a channel 70 in the material and is urged by centrifugal force radially outwardly through the material to a diffuser 72, 73 in the body. The material enhances the transfer of rotary motion to the liquid. In an alternative embodiment the compartment is defined within a rotating housing 12 and the high pressure, high velocity liquid is collected in a diffuser 78 in the static body 14. A high pressure seal 82 is provided between the static body and the rotating housing. <IMAGE>
Patent GB-2056786-A (GB)
Title: Starter for internal combustion engines
IPC: F02N15/00
Filed: 1980-06-06
Abstract: The starter comprises an electro- magnetic switch (8) secured externally to the starter motor. The excitation winding (17) of the starter motor is connected to the switch by way of a lead (19) which is guided in a sealed manner out of the pole housing or a bearing cover disposed on the pole housing. For this purpose, a sealing arrangement is fitted in a recess in the pole housing (2) and/or the bearing cover (7). The sealing arrangement comprises a reception member (21) which is made from an insulating plastics material and which is fixed in a recess (46) in the pole housing, and a resilient sealing member (22) which is accommodated in the reception member and through which projects the lead guided out of the starter motor in a sealed manner. The periphery of the sealing arrangements abuts sealingly against the recess in the bearing cover and in the pole housing. The sealing member is thereby held in position. The sealing arrangement and the bearing cover can be automatically assembled and mounted on the pole housing, the bearing cover assuming its fixed position on the pole housing without angular displacement. <IMAGE>
Patent GB-2082125-A (GB)
Title: A multi hulled craft having a hydrofoil for trimming.
IPC: B63B1/24
Filed: 1980-08-05
Abstract: A multi hulled craft has a lifting surface located at the after end which surface comprises a hydrofoil or hydrofoils variously arranged to produce hydrodynamic lift when in forward motion so as to favourably modify the longitudinal angle of trim of the craft. The lifting surface is arranged at such depth that the larger part of its area is at, or below, the general level of the hull bottom at the point of its attachment, so as to remain submerged in rough water conditions. The angle of attack of the lifting surface being either fixed, at an experimentally predetermined angle, or actively controlled by an independent control mechanism, to produce optimum results throughout the speed range. Alternatively, the support structure of the lifting surface can be arranged as a hinged device, to permit the raising of the surface to a position above the waterline to facilitate maintenance or the operation of the craft in question without its use. <IMAGE>
Patent GB-2084296-A (GB)
Title: Improvements relating to flap valves
IPC: F16K1/24
Filed: 1980-09-19
Abstract: A flap valve has a composite flap comprising a hinged gate (5) and a sealing disc (4) spring mounted on and guided by the gate. When closed the rim (19) of the disc seals against a matching part-spherical surface (17), on the interior of the valve body (1, 2), being urged there by spring bias. The disc is movable relative to the gate from outside the valve body (to unseat from the sealing surfaces (17)) by means of a linkage (6, 7, 10), one of whose elements passes co-axially through a journal (12) on which the gate hinges. A rotatable and axially movable shaft (15) couples independently to the journal and to the co-axial link (10) to govern the unseating of the disc and the rotation of the flap. <IMAGE>
Patent GB-2063607-A (GB)
Title: Electronic amplifiers
IPC: H03F3/387
Filed: 1980-11-03
Abstract: In an electronic amplifier having a floating output stage (42), a demand signal modulates a high frequency carrier (e.g. 20MHz) and the modulated carrier is applied to the floating output stage through a capacitance (10) of very low value (e.g. 1pf) and is then demodulated. The amplifier is preferably a bridge amplifier and each arm of the bridge may comprise a number of floating output stages, each supplied with the modulated carrier through a low-value capacitor (10). As described, the amplifier drives a crystal (40) for modulating electro- magnetic radiation from a laser. <IMAGE>
Patent GB-2063511-A (GB)
Title: Ophthalmic microscope
IPC: A61B3/13
Filed: 1980-04-11
Abstract: A microscope, used for observing cornea 13 endothelcells, comprises an objective structure including an optical tip member 2, such as a cone lens, which is provided with means 25 for keeping a pool of impregnating liquid 26 between said optical tip member 2 and the cornea 13 in order to obtain substantial reduction of reflection from the cornea surface and a corresponding increase of the field of view and resolution of the microscope. <IMAGE>
Patent GB-2090690-A (GB)
Title: Coin-freed gaming machine
IPC: G07F17/34
Filed: 1981-01-05
Abstract: A fruit machine incorporates a "special feature" in which, after a normal random spin of the reels, the machine makes available to the player a variable number of adjustment stops to step the reels round to a winning combination. In addition to determining the total number of such stops or steps available to the player in a particular game, the machine itself automatically computes the most advantageous way for the player in distributing the stop movements between the various reels and itself automatically moves the reels in the most advantageous way (within the limitation of the total number of stops available in a particular game. <IMAGE>
Patent GB-2102365-A (GB)
Title: Endless-track conveyor
Inventor: LEAK PAUL ALBERT
IPC: B65G17/42
Filed: 1981-05-11
Abstract: An endless-track conveyor has its conveying surface carried by two endless chain drives which, in use, travel in unison and are spaced laterally apart by a substantially unvarying amount along their common run. The conveying surface comprises a succession of spaced bars spanning the gap between the chain drives. The chains are roller chains, and each end region of each bar is fastened to an adjacent link of one of the chains by a resiliently deformable nylon insert (34) which projects from the underside of the bar into the gap defined between successive rollers of the chain, between the side plates (37) of the link, and ends in a portion (34a) which is larger than the narrowest part of said gap. <IMAGE>
Patent GB-2084278-A (GB)
Title: A grouting capsule for rock bolts
IPC: F16B13/14
Filed: 1981-05-27
Abstract: A capsule of hardenable grouting adhesive material has a casing which, over a length of at least 1.0 times the diameter at a leading end of the casing, is sufficiently strong to prevent excessive distortion of the capsule when the capsule is projected into a drill hole at a velocity of 7 to 12 metres per second, and has at least one radially expansible portion 14, 15 extending over a length of at least 0.6 times the casing diameter which is expanded radially into engagement with the drillhole wall when the capsule is projected into the drill hole. The preferred capsule casing comprises a continuous tube 10 of flexible material e.g., plastics material, partially reinforced by three spaced sections 13 of an adhered external layer of reinforcing material e.g. paper or plastics sheet. Loading of capsules into drillholes in mine roofs by projection from a remotely controlled pneumatic loading machine is facilitated and the loaded capsules are prevented from falling out the drillholes. <IMAGE>
Patent GB-2100145-A (GB)
Title: Apparatus for detonation coating
IPC: B23K20/08
Filed: 1981-06-16
Abstract: A detonation coating apparatus comprises a detonation chamber thereby made in the form of a barrel (1) having one end open and the other closed, a gas mixture supply system (2), a spark plug (6) for igniting an explosive gas mixture supplied to the chamber, and a powder supply system which includes a feeder (16) and a hopper (17) communicating with each other through a slide valve (24), a pipeline (21) including a valve (22) for supplying carrier gas to the feeder (16) to convey powder therefrom to the detonation chamber via pipeline (20), and control means including a powder detector (26) mounted at the open end of the barrel and producing a signal which is passed through an inverter (27) to an actuator of the slide valve (24) whereby to maintain the level of powder in the feeder substantially constant throughout operating time, and thereby ensure a substantial equal amount of powder injected into the detonation chamber during each operation cycle. <IMAGE>
Patent GB-2083267-A (GB)
Title: Video disc player with program search facility
IPC: G11B17/00
Filed: 1981-07-30
Abstract: A video disc player e.g. of the capacitive type with servo-controlled head tracking, wherein two types of address signals, indicative of program ("Chapter") number and of elapsed time, are alternately recorded in the vertical blanking periods, has a search facility with address display 24 for driving the pickup to locate a desired address of either type and resume reproduction there at a selected speed. A first actuation of a switch 52, or 53 displays the current address (number or time, respectively); a second actuation clears the display and allows a desired address to be entered from a keyboard 55 into a memory 51 and onto the display. Operation of a switch 54 actuates a search circuit 56 or 58 to drive the pickup radially; the keyboard 55 is then used to select the speed at which reproduction will be resumed when the desired address is reached (as a multiple of normal speed NM), whereupon the current address will also be displayed again. <IMAGE>
Patent GB-2087492-A (GB)
Title: Adjustment of drum brake arrangement
IPC: F16D65/56
Filed: 1981-08-18
Abstract: A drum brake arrangement for a vehicle has a strut 12, 13, which is capable of extending by turning an adjusting gear 14, an adjusting lever 15 being rotatably mounted on one of the shoes or a part movable therewith, this lever 15 having a tongue piece 15c in abutting engagement with one end of the strut and a feed end in engagement with the adjusting gear a stopper 18 being provided for preventing the adjusting lever from rotating excessively to prevent excessive movement of the adjusting gear 14. The stopper 18 may be provided on the lever 15 and engage the shoe (rim 7b or web 7a) for restraining the lever 15 from excessive turning-or it may engage the strut part (112) as in Figures 3, 4, 5, 6, 7. Alternatively the stopper 418 may be provided on the (web of the) shoe 407 as in Figure 8. <IMAGE>
Patent GB-2107427-A (GB)
Title: Internal combustion engines
Inventor: KINNERSLY RICHARD FURNEAUX
IPC: F02F3/16
Filed: 1981-10-03
Abstract: The invention is concerned with an internal combustion engine of the kind comprising a cylinder (10) and a piston (12) slidably mounted in the cylinder. The piston (12) is provided with a cooling passageway (22) which at or adjacent the bottom dead centre position of the piston is aligned with inlet and outlet ports (24, 26) of the cylinder. In the use of the engine, gas, which may be air or a mixture of fuel and air, is caused to flow through the cooling passageway during part at least of the cycle of reciprocation of the piston in the cylinder. <IMAGE>
Patent GB-2088262-A (GB)
Title: Securing dies on a die mount of a press
IPC: B21J13/03
Filed: 1981-11-12
Abstract: A device comprises first clamps (6) and second clamps (7), tiltably mounted on a die mount (1), and each formed with a shoulder (8) at each side thereof, a projection (11, 14) at one side of the bottom, and an opening (10, 13), and each provided with a spring (12, 15) at the other side of the bottom. The opening (10) in each first clamp (6) is circular, whilst the opening (13) in each second clamp (7) is trapezoidal. A camshaft (16) extends through the openings in the first and second clamps, and is formed with a plurality of enlarged portions (17) received in the openings (10) in the first clamps (6) and a plurality of spiral cams (18) received in the openings (13) in the second clamps (7). In operation, dies (20) are placed between the rows of clamps, and the shoulders (21) of the dies (20) are secured by the shoulders (8) of the clamps against the die mount when the camshaft (16) is turned to tilt the first and second clamps (6,7), respectively, in opposite directions. <IMAGE>
Patent GB-2092332-A (GB)
Title: Fuel injection pumping apparatus
IPC: F02D1/12
Filed: 1982-01-25
Abstract: A fuel injection pumping apparatus includes a fuel pump having a quantity control rod which is moved by a hydraulic servo mechanism 28. A speed responsive mechanism controls the setting of a servo valve 37 which controls the application of oil under pressure to a piston 33, the latter being coupled to the control rod. In order to control the engine speed in the event that no oil under pressure is available to the servo mechanism, a spring 48 biases the piston 33 and hence the control rod to a low fuel position. <IMAGE>
Patent GB-2117115-A (GB)
Title: Surface acoustic wave accelerometer
Inventor: DWYER DOUGLAS FRANK GEORGE
IPC: G01P15/097
Filed: 1982-03-23
Abstract: An accelerometer comprises a resilient strip of quartz 1 on one face of which are formed surface acoustic wave transducers 3, 4 connected in the feedback loop of an amplifier to form an oscillator. The strip 1 is mounted in a support member 2 which is movable in a direction a normal to the plane of the strip whereby the resilient strip will bend because of inertial resistance to acceleration forces. This bending of the strip alters the amplifier loop delay and hence the oscillator frequency f. Arrangements are disclosed for compensating for temperature variations and unwanted coupling (Figs. 3 to 5). Alternatively, a reference frequency may be provided from a surface acoustic wave device mounted on a rigid strip (Fig. 6). A heater may be controllable to maintain the accelerometer at a constant temperature (Fig. 7). <IMAGE>
Patent GB-2096534-A (GB)
Title: Billeting machine for cutting small trees
IPC: B23D25/12
Filed: 1982-04-05
Abstract: A pair of cutter assemblies 10,11 are mounted for roation about parallel axes 12,13 respectively. Each assembly comprises a plurality of outwardly projecting cutting blades 15 in the form of plates bolted to a support member 14. The assemblies 10,11 are rotated in opposite directions 19,20 such that successive pairs of blades, one from each assembly, are brought simultaneously into the gap 31 between the assemblies, the cutting edges 18 of each pair of blades being closely adjacent at their nearest approach. The blades 15 are radially offset from their support members 14 whereby the blades of successive pairs are brought to their nearest approach at a decreasing angle  theta  of less than 180 DEG . <IMAGE>
Patent GB-2097516-A (GB)
Title: Non-electric blasting assembly
IPC: F42B3/10
Filed: 1982-04-26
Abstract: A percussion-actuated instantaneous or delay detonator transmits a detonation from a first length of low-energy detonating cord (LEDC) transversely positioned adjacent the detonator's percussion-responsive end to a U-shaped segment of a second length of LEDC held with its apex against the base-charge end of the detonator and the arms of the U extending away from the detonator. A directional connector for connecting a U-shaped segment of detonating cord adjacent each end of the detonator has identifiable donor- and receiver-cord-housing sections, e.g., the receiver-cord-housing section has the shape of the head, and the donor-cord-housing section the shape of the butt, of an arrow. A connector adapted to hold receiver LEDC and high-energy detonating cord (HEDC) segments is internally configured to receive nested U-shaped segments of LEDC and HEDC only when the LEDC is adjacent the base-charge end of the detonator.
Patent GB-2106249-A (GB)
Title: Protective instrument mounting for carrying case
Inventor: METZGER LOUIS G
IPC: A45C13/02
Filed: 1982-05-27
Abstract: A mounting is provided for instruments in a carrying case, so as to protect an instrument so mounted from impact shock, vibration, dust and moisture even when the case cover is removed to allow access to the instrument panel meters, controls, and so forth. The mounting includes a fitting 30 for the top of the wall 11 of the carrying case, which fitting includes a bracket 36 mounting a laminate 40, 42, 44, which provides simultaneously for a moisture, splash and dust barrier, together with an impact shock and vibration barrier. <IMAGE>
Patent GB-2101805-A (GB)
Title: Color picture tube and inline electron gun
Inventor: HUGHES RICHARD HENRY
IPC: H01J29/46
Filed: 1982-07-06
Abstract: A color CRT has an inline electron gun for generating and directing three electron beams toward a screen, the gun including a main focus lens formed by two spaced electrodes (40, 42) each having three separate inline apertures (58,60,62;64,66,68) and a peripheral rim (70,72), the apertured portion of each electrode being within a recess (54,56) set back from the rim, 15 wherein the main focus lens electrode (42) closest to the screen includes a slot (95) e.g. formed by two strips (96,98), on the side facing the screen, the slot extending in the direction of the three electron beam paths and includes means for providing a weaker stigmator effect on the two side beams than on the center beam. As shown in Figure 5 the ends of the strips (96, 98) may be tapered, or curved or the strips shortened, to provide the weaker stigmator effect. Alternatively, Figures 9 and 10 (not shown), the slot is dogboned in shape and located in a bracket (102) attached to an apertured plate (52), in turn attached to the screen side of the main focus lens electrode closest to the screen. <IMAGE>